A:3x+4y﹣14=0
B:3x﹣4y+14=0
C:4x+3y﹣14=0
D:4x﹣3y+14=0
——We like Zhang Lili, the most beautiful teacher .——Yes, she is ____________ popular with her students.
求下列梯形的面积:
面积是____ m2
20以内的质数有____.(从小到大填写)